1. Official, lawful, and authorized methods or procedures established by law for conducting business, communication, or administrative processes
We must follow the legal channels to file a complaint against the company.
Devemos seguir os canais legais para registrar uma reclamação contra a empresa.
2. Legitimate routes or pathways within a legal or institutional framework
The organization resolved the dispute through proper legal channels.
A organização resolveu a disputa através dos canais legais apropriados.